Looking for recommendation on smart switch. Understand there are few type of smart switches, eg:
1. wifi switch with neutral
2. wifi switch without neutral (but need to install capacitor)
3. zigbee switch (which needs hub)
Option 1 (wifi switch with neutral ):
- if we have neutral wire ready, then this would be the option to go for. If the existing switch don't have neutral wire, then it will be troublesome.
- what will happen if we didnot connect neutral wire in this case, will it causing any issue, unable to work ? any experience ppl can advise on this ?

Option 2: (wifi switch without neutral, need extra capacitor to install):
- for non-neutral type of smart switch, it will require capacitor to install in one of the light to avoid "flipping". this will be very disturbing especially this is being install in bedroom, the light will flip and disturb sleep.
- what will happen if we didnot install the "capacitor" or the "capacitor" is harder to install (eg: external lighting in garden/car porch)

Option 3: zigbee switch

- this will need zigbee hub in order to control the switch,
- Does this still require neutral wire? From the product manual, it looks like this is not need neutral wire as well as capacitor
- in term of wiring, this option would be the simplest.
- But how about the range? How far can we access the zigbee switch from the hub ? This might be another issue.

Please kindly share your experience and suggest the best method for wifi switches, thank you !